EN 1434-4:2015

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Requirements
6 Specification of operating conditions
7 Tests and measurements
8 Documentation
Annex A (informative) - Testing procedure for
        temperature sensor pairs with pockets and
        without pockets
Annex B (informative) - Checklist for type approvals
        of heat meters according to EN 1434
Annex C (informative) - Criteria for a fully developed
        flow profile
Annex ZA (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 2004/22/EC, MID
Bibliography

This European Standard specifies pattern approval tests and applies to heat meters. Heat meters are instruments intended for measuring the energy which in a heat-exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid. The heat meter indicates the quantity of heat in legal units.Electrical safety requirements are not covered by this European Standard.Pressure safety requirements are not covered by this European Standard.Surface mounted temperature sensors are not covered by this European Standard.This standard covers meters for closed systems only, where the differential pressure over the thermal load is limited.